ferrule vs spile

ferrule

noun
  • A bushing for securing a pipe joint. 

  • The plastic band attaching the tip to the cue. 

  • The pinched metal band which holds the bristles of a paintbrush to the shaft. 

  • The metal spike at the end of the shaft of an ice axe. 

  • A band or cap (usually metal) placed around a shaft to reinforce it or to prevent splitting. 

  • A metal sleeve placed inside a gutter at the top. 

verb
  • To equip with a ferrule. 

spile

noun
  • A spigot or plug used to stop the hole in a barrel or cask. 

  • A pile; a post or girder. 

  • A spout inserted in a maple (or other tree) to draw off sap. 

verb
  • To provide (a barrel, tree etc.) with a spile. 

  • To support by means of spiles. 

  • spoil. 

  • To plug (a hole) with a spile. 

  • To draw off (a liquid) using a spile. 

  • To drive piles into. 

How often have the words ferrule and spile occurred in a corpus of books? (source: Google Ngram Viewer )